code: def value_similar(self, a, b):
      return True if a == b else False
      # the value equal condition used in "Sequicity" is too loose
      if (
          a in b
          or b in a
          or a.split()[0] == b.split()[0]
          or a.split()[-1] == b.split()[-1]
      ):
          return True
      return False
  
imports: import math, logging, copy, json
  from collections import Counter, OrderedDict
  from nltk.util import ngrams
  from .None import ontology
  from .clean_dataset import clean_slot_values
label_desc: Use image node_id 9 for calling the MultiWozEvaluator obj's underlying member method code with example usage: obj.value_similar(a, b) and returns: unknown, False, True